Stone-sawing machine.



E A CHASE STONE sAwlNG MACHINE.

APPLICATION FILED NOV-13,1909. 1L I #I 1I I 1 Patented E1111161, 1915.

5 SHEETS-SHEET II RS C0.. PHUNLITHO.. WASHINGTON. D. C.

E. A. CHASE.

STONE SAWING MACHINE.

APPucATmN flu-:D Nov.1s, |909.

Patented. J une 1, 1915.

31a/mento@ a Hom/w13 THE NORFHS PTERS CQ. PHOTULITHO., WASHINGTON. D. C.

E. A. CHASE. STONE sAwlNG MACHINE.

f APPLICATION FILED NOV. I3. 1909. 19%@M m Patented June 1, 1915.

5 SHEETS-SHEET 3.

THLNDRRIS PETERS CO.. PHOmlwmA. wwulxnmu. mi. C;

E. A. CHASE.

STONE SAWING MACHINE.

MfPLlcATloN FILED Nov. 13, |909.

Patented June 1, 1915.

5 SHEETS-SHEET 4.

rHE Nngkls PETERS C0.. HO'QLITHO., WASHINGTON. D. C.

E. A. CHASE.

STONE SAWING MACHINE.

APPLICATION FILED Nov. I3. |909.

Patented June 1, 1915.

Llhl.

5 SHEETS-SHEET 5.

rHE No'RRls PETERS C0.. PHOTD-LI TNO.. WASHHNGFIZW.. un. C.

ELROY A. CHASE, OF NORTl-IFIELD, VERMONT, ASSIGNOR, BY DRECT AND MESNE .FLS-

SIGNMENTS, TO AMERICAN GRANITE SAW COMPANY, OF KITTERY, MAINE, A COR- POBATION 0F MANE.

STGNE-SAWNG MACHINE.

isaiasi..

Speciication of Letters Patent.

Patented di une 1, i915..

T0 all whom t may concern Be it known that I, ELROY A. CHASE, a citizen of the United States, residing at Northfield, in the county of Washington and State of Vermont, have invented certain new and useful improvements in Stone-SawinO' Machines, of which the following is a fu l, clear, and eXact specification, reference being had to the accompanying drawings, in which- Figure 1 is a side elevation of a machine embodying one embodiment of my improvements; Fig. 2 a front elevation thereof, partly in transverse section; Fig. 3 a rear elevation showing means for adjustably and pivotally supporting the rear end of the saw frame; Fig. l a perspective view of one of the saw heads or blade carrying frames detached; Fig. 5 a detail side elevation showing my improvements adapted to cut molding on the corner of the stone; Fig. '6 an end elevation thereof, and Fig. 7 is a sectional side elevation; Fig. 8 a partial end elevation, and Fig. 9 a partial plan view illustrating the construction of the saw frame.

This invention has special relation to that type of continuous stone cutting machines covered by my former patent numbered 916,10a and dated March 23, 1909, granted to myself as patentes and to Amos F. Lanier as assignee of one-half interest, reissued July 19, 1910, No. 13,134, to the American Granite Saw Co.

One object of the present improvements is to so mount the gang of saw heads that they may be quickly and accurately adjusted to accommodate stone blocks of various thicknesses and at the same time keep all the teeth in cutting relation to the stone.

Another object is to so mount the saw heads that they shall be firmly braced and supported in all directions whereby twisting of their shafts is avoided and the blades are caused to work with a maximum of accuracy, as more fully hereinafter set forth.

A still further object is to adapt the machine for cutting corner and other moldings.

as more fully hereinafter set forth.

in the drawings, a designates the four corner posts of the main frame which are rigidly connected and braced by longitudinal beams Z ,longitudinal truss rods c, transverse beams transverse truss rods @,base beams f, diagonal brace beams g, all being connected together in any suitable manner to form a rigid durable frame. Suitable cars or trucks h are adapted to carry the stone blocks one after another under the saws, suitable means being employed for clamping stone on the cars while under the action of the saws and any suitable means being employed to propel the cars.

The saw heads are simultaneously vibrated in substantially the same manner as shown in my former patent, namely, by means of a rod or bar z' pivotally connecting and properly spacing the upper extremities of the saw heads j, and a pitman le connecting said bar to the wrist-pin of the driving shaft. lilie saw-frame consists of a pair of side beams Z connected rigidly at their ends by transverse beams m, forming an open frame which is suspended within the main frame by means of four vertical screws n, one pair being located at each end of the machine, by means of which and the connected parts the saw-frame may be tilted longitudinally, that is, in the direction of movement of the stone-conveying means. To brace the saw-frame a pair of truss rods 0 extend upwardly and inwardly from each end of each of the side beams to a point about mid-way the length of the saw-frame where they are respectively connected to the upper end of an upstanding post or pedestal p rigidly bolted on top of the aforesaid side beam. These rods are provided with nuts at their ends to tighten them. ln this way a very strong and rigid saw-frame structure is provided which will eliminate all twisting and distortion and therefore insure accuracy in the working of the saws.

rlhe forward pair of the screws n are pivotally connected to the sawframe by means of bracket castings g in which is journaled a transverse rod or shaft r whose ends are hung in journal brackets s connected to the lower ends of the respective screws. The ends of the shaft r project lbeyond the hangers or brackets s and have bearings against vertical plates t fastened to the inner side of the adjacent corner posts a, whereby a side-wise vibration of the saw frame at this end of the machine is prevented. These screws n are raised and lowered in any suitable manner but preferably by means of worm nuts u threaded on the screws at a point above the main frame and journaled in boxes e, these boxes being supported pivotally on the frame by means of trunnions w `llo to permit the screws to swing slightly forwardly and backwardly as they are adjusted. The nuts u are rotated simultaneously by means of a transverse shaft carrying suitable worms.

The rear end of the saw frame is connected to the screws n at that end of the machine by means of blocks je/ attached to the lower ends of the screws and carrying short inwardly extending pivots z on which are hung hangers a the lower ends of which are rigidly bolted to the respective rear ends of the side beams of the saw frame. rIhe screws n are adapted to be raised and lowered in the same manner as the rear pair of screws, and the blocks g/ are vertically guided by means of the adjacent corner post and suitable guide plates thereon, or in any other suitable manner which will insure the blocks 1/ and their supporting pivots against lateral shifting or vibration in all directions. It will thus be observed that the respective ends of the saw frame are vertically adjustable independently of each other whereby the angle of the general cutting plane of the saws may be varied with respect to the guiding and supporting means for the stone, so that the machine may be adjusted to operate on stone of any thickness within the limits of the particular machine but at the same time insure all the cutters working.

In adjusting the saw frame, the rear end is adjusted so that the rear cutter blade will just clear the car or carrier on which the stone is mounted, andthen' the front end of the saw frame is adjusted so that the front cutter blade will just engage the block. By this arrangement the series of cutter blades can be adjusted so that they will all act on any thickness of stone within the limits of the machine. It will be noted that when the rear end of the saw frame is adjusted, the same will pivot around the shaft r, and that when the front end of the frame is adjusted the same will turn on the pivots z-e. It also will be noted that the journal brackets s-s will turn on the shaft r as the adjustments are made, and also that the front screws n-Jn, will swing about the trunnions 11i-w to accommodate the various adjustments of the front end of the saw frame. By this construction the saw frame can be set at any desired'inclination. It also will be noted that the various adjustments or inclinations of the saw frame can be made without disturbing the operating connections for vibrating the saw heads.

In my patented construction the saw heads are shown fastened to the ends of their supporting shafts but in the present construction I attach the saw heads j (to which are clamped the depending saw blades 0) to a point about mid-way the length of their supporting shafts d and I journal these shafts d at their ends in suitable adjustable boxes c fastened to the under sides of the side beams of the saw frame, thus bringing the saw heads to the longitudinal center of the saw frame. To brace the saw heads in all directions with respect to their shaft d I employ a suitable arrangement of truss rods, preferably the arrangement shown in F ig. fl. In this arrangement a pair of collars f and g are clamped rigidly to each end of the shaft at opposite ends of its journal portion It and I rigidly connect the inner pair f of these collars to the respective front and rear edges of the upper portion of the saw head by truss rods z" and the outer collars g to the lower end of the cutter head by means of truss rods j, said collars being provided with suitable ears or lugs for convenient connection to said truss rods. In this way an approximately diamond-shaped frame with the shaft running through the center thereof is provided. This truss frame prevents all objectionable vibration of the saw head and its blade and twisting of the saw carrying shaft and thus conduces toY the maximum of accuracy in the alinement and the action of the saws.

As shown in Figs. 5 and G, my improvements lend themselves nicely to the art of cutting moldings in stone blocks, especially corner moldings. To adapt the machine for cutting moldings I have simply to detach the straight fiat kerf-cutting blades c from the heads and replace them by cutters Z whose cutting edge is of the contour of the molding to be cut. I clamp this cutter by suitable clamps m to a supplemental head a and bolt this head removably to the lower end of the main head j. It will be observed that with a series of molding cutters attached to the heads in this manner the saw frame may be so attached that as the stone passes under the cutters a groove of the contour of the cutters will be cut into the stone. It will be understood that the saw frame shall be tilted to the desired angle, this angle depending on the character of the work to be performed. Cutting a molding of the kind shown, the frame will be preferably tilted to nearly a horizontal position, slightly inclining backwardly, so that the first, shortest cutter will do the bulk of the work of cutting, that is, will rough out the molding; the next cutter will then remove a little more stone and bring the molding more nearly to its iinished shape, and so on to the last or longest cutter, this last cutter dressing` off only enough stone to bring the molding to its finished shape. In this way the moldings may be quickly and accurately cut.

I may of course use any suitable molding cutter but I prefer the laminated type shown, which consists of a series of comparatively thin blades superposed and clamped adj ustably against the carrying head or plate. When constructed in this way the blades composing the cutter may be adjusted vertically with respect to each other so that their lower cutting edges shall take approximately the shape of the molding, as shown in Fig. 6. The cutter is therefore adapted to be adjusted to a great variety of moldings and when adjusted and clamped rigidly the cutter will be very efficient in action. It will be understood that the laminae may greatly vary in thickness, it being desirable to use thick blades for moldings of the larger kind and especially thosehaving considerable fiat-face area, and thinner blades for finer or smaller moldings.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A stone cutting machine having in combination a cutter supporting frame, a plurality of cutters pivoted on said frame and arranged in edge-wise alinement, a support for the stone, and means for adjusting said frame, said means being effective to vary the angle of the general cutting plane of said cutters with reference to said support.

2. A stone cutting machine having in combination a main frame, a supplementary frame carried thereby, a plurality of cutters pivoted to the supplementary frame and arranged in edgewise alinement, means for vibrating the cutters on their pivots, a support for the stone, and means for adjusting the supplementary frame, effective to vary the angle of the general cutting plane of said cutters with reference to said support.

3. A stone cutting machine having in combination a main frame, a supplementary frame carried thereby, a plurality of cutters pivoted to the supplementary frame and arranged in edgewise alinement, means for vibrating the cutters on their pivots, a support for the stone, and means for adjusting the supplementary frame at either or both ends, effective to vary the angle of the general cutting plane of said cutters with reference to said support.

il. In a stone cutting machine, the combination of a main frame, a saw frame carried thereby, a series of heads independently pivoted to the saw frame, cutters carried thereby edgewisely in alinement, means for simultaneously vibrating the saw heads on their pivots, and means for independently adjusting the respective ends of the saw frame vertically.

5. In a stone cutting machine, the combination of a main frame, a saw frame carried thereby, a series of heads independently pivoted to the saw frame, cutters carried thereby edgewisely in alinement, means for simultaneously vibrating the saw heads on their pivots, and means for adjusting the saw frame, whereby the cutter blades can act on different thicknesses of stone without disturbing the driving connections for the saw heads.

6. In a stone cutting machine, the combination of a main frame, vertically adjustable blocks mounted at the rear thereof, vertically adjustable brackets at the front thereof, a saw frame pivoted to said blocks and brackets, a series of saw heads independently pivoted to the saw frame, and means for vibrating the saw heads on their pivots.

7. In a stone cutting machine, the combination of a main frame, vertically adjustable blocks mounted at the rear thereof, vertically adjustable brackets at the front thereof, a shaft mounted in said brackets, a saw frame pivoted to said blocks and on said shaft, a series of cutter heads independently pivoted to the saw frame, and means for vibrating the saw heads on their pivots.

8. In a stone cutting machine, the combination of a main frame, vertically adjustable blocks mounted at the rear thereof, vertically adjustable brackets at the front thereof, a shaft mounted in said brackets and having its ends arranged to bear on the main frame, a saw frame pivoted to said blocks and on said shaft, a series of saw heads independently pivoted to said saw frame, and means for vibrating said saw heads.

9. In a stone cutting machine, the combination of a main frame, vertically adjustable blocks mounted at the rear thereof, brackets at the front thereof, a shaft carried by said brackets, a saw frame pivoted on said blocks and on said shaft, screws for raising and lowering the ends of said saw frame, means for pivotally connecting the screws at the front to the main frame, a series of saw heads independently pivoted to the saw frame, and means for vibrating the saw heads on their pivots.

10. In a stone cutting machine, the combination of a main frame, a saw frame adjustably mounted therein, a series of saw heads independently pivoted to the saw frame, a rod pivotally connecting the upper extremities of the saw heads, a pitman connected to said rod, a crank-pin for driving said pitman, and means for independently adjusting the ends of said saw frame without disturbing said pitman connection.

11. In a stone cutting machine, the combination of a supporting shaft, a saw head mounted thereon, collars secured to said supporting shaft, and truss rods arranged between said collars and the saw head.

12. In a stone cutting machine, the combination of a supporting shaft, a saw head mounted thereon, a pair of collars secured to the supporting shaft at each side of the saw head, and truss rods arranged between the saw head and collars to brace the saw head.

13./ A stone cutting machine comprising fixed, spaced .apart uprights, a Work support, a tool support tiltably mounted on said upright, a series of tools in edgewise alinement pivotaliy mountedon said tool support, and meansA for adjusting` said tool support relative .to said Work support to bring the operative portions of the several tools to different angles relative to the Work support.

in testimony whereof I hereunto aiix my signature in the presence of two witnesses this 8th day of November, 1909.

ELROY A. CHASE.

Witnesses: T. Z. WiissoN, M. O. CAAs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

